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    <title>控制四相步进电机</title>
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  <body>
    <div id="base" class="">

      <!-- Unnamed (矩形) -->
      <div id="u2850" class="ax_default _一级标题">
        <div id="u2850_div" class=""></div>
        <div id="u2850_text" class="text ">
          <p><span>所需硬件：</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2851" class="ax_default" data-left="60" data-top="135" data-width="97" data-height="120">

        <!-- Unnamed (矩形) -->
        <div id="u2852" class="ax_default box_1">
          <div id="u2852_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2853" class="ax_default box_1">
          <div id="u2853_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2854" class="ax_default ellipse">
          <img id="u2854_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2855" class="ax_default ellipse">
          <img id="u2855_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2856" class="ax_default ellipse">
          <img id="u2856_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2857" class="ax_default ellipse">
          <img id="u2857_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2858" class="ax_default label">
          <div id="u2858_div" class=""></div>
          <div id="u2858_text" class="text ">
            <p><span>A+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2859" class="ax_default label">
          <div id="u2859_div" class=""></div>
          <div id="u2859_text" class="text ">
            <p><span>B+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2860" class="ax_default label">
          <div id="u2860_div" class=""></div>
          <div id="u2860_text" class="text ">
            <p><span>B-</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2861" class="ax_default label">
          <div id="u2861_div" class=""></div>
          <div id="u2861_text" class="text ">
            <p><span>A-</span></p>
          </div>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2862" class="ax_default line">
          <img id="u2862_img" class="img " src="images/控制四相步进电机/u2862.png"/>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2863" class="ax_default label">
        <div id="u2863_div" class=""></div>
        <div id="u2863_text" class="text ">
          <p><span>步进电机</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2864" class="ax_default" data-left="356" data-top="169" data-width="225" data-height="89">

        <!-- Unnamed (水平线) -->
        <div id="u2865" class="ax_default line">
          <img id="u2865_img" class="img " src="images/控制直流电机/u2597.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2866" class="ax_default line">
          <img id="u2866_img" class="img " src="images/控制直流电机/u2598.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2867" class="ax_default label">
          <div id="u2867_div" class=""></div>
          <div id="u2867_text" class="text ">
            <p><span>-</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2868" class="ax_default label">
          <div id="u2868_div" class=""></div>
          <div id="u2868_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2869" class="ax_default box_1">
          <div id="u2869_div" class=""></div>
          <div id="u2869_text" class="text ">
            <p><span>电池</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2870" class="ax_default box_1">
          <div id="u2870_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2871" class="ax_default box_1">
          <div id="u2871_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2872" class="ax_default box_1">
          <div id="u2872_div" class=""></div>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2873" class="ax_default label">
        <div id="u2873_div" class=""></div>
        <div id="u2873_text" class="text ">
          <p><span>9V电池盒</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2874" class="ax_default" data-left="391" data-top="359" data-width="119" data-height="54">

        <!-- Unnamed (矩形) -->
        <div id="u2875" class="ax_default box_1">
          <div id="u2875_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2876" class="ax_default line">
          <img id="u2876_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2877" class="ax_default line">
          <img id="u2877_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2878" class="ax_default line">
          <img id="u2878_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2879" class="ax_default line">
          <img id="u2879_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2880" class="ax_default ellipse">
          <img id="u2880_img" class="img " src="images/四角开关/u61.png"/>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2881" class="ax_default label">
        <div id="u2881_div" class=""></div>
        <div id="u2881_text" class="text ">
          <p><span>四角按钮开关</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2882" class="ax_default" data-left="425" data-top="494" data-width="40" data-height="16">

        <!-- Unnamed (矩形) -->
        <div id="u2883" class="ax_default box_1">
          <div id="u2883_div" class=""></div>
          <div id="u2883_text" class="text ">
            <p><span>10KΩ</span></p>
          </div>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2884" class="ax_default label">
        <div id="u2884_div" class=""></div>
        <div id="u2884_text" class="text ">
          <p><span>电阻</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2885" class="ax_default" data-left="60" data-top="330" data-width="180" data-height="180">

        <!-- Unnamed (矩形) -->
        <div id="u2886" class="ax_default box_1">
          <div id="u2886_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2887" class="ax_default box_1">
          <div id="u2887_div" class=""></div>
          <div id="u2887_text" class="text ">
            <p><span>L298N</span></p>
          </div>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2888" class="ax_default line">
          <img id="u2888_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2889" class="ax_default line">
          <img id="u2889_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2890" class="ax_default line">
          <img id="u2890_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2891" class="ax_default line">
          <img id="u2891_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2892" class="ax_default line">
          <img id="u2892_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2893" class="ax_default line">
          <img id="u2893_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2894" class="ax_default line">
          <img id="u2894_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2895" class="ax_default line">
          <img id="u2895_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2896" class="ax_default line">
          <img id="u2896_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2897" class="ax_default line">
          <img id="u2897_img" class="img " src="images/控制直流电机/u2527.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2898" class="ax_default line">
          <img id="u2898_img" class="img " src="images/控制直流电机/u2527.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2899" class="ax_default line">
          <img id="u2899_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2900" class="ax_default line">
          <img id="u2900_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2901" class="ax_default line">
          <img id="u2901_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2902" class="ax_default line">
          <img id="u2902_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2903" class="ax_default line">
          <img id="u2903_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2904" class="ax_default line">
          <img id="u2904_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u2905" class="ax_default line">
          <img id="u2905_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2906" class="ax_default box_1">
          <div id="u2906_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2907" class="ax_default line">
          <img id="u2907_img" class="img " src="images/控制直流电机/u2537.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2908" class="ax_default line">
          <img id="u2908_img" class="img " src="images/控制直流电机/u2537.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2909" class="ax_default line">
          <img id="u2909_img" class="img " src="images/控制直流电机/u2539.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2910" class="ax_default ellipse">
          <img id="u2910_img" class="img " src="images/控制直流电机/u2540.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2911" class="ax_default ellipse">
          <img id="u2911_img" class="img " src="images/控制直流电机/u2540.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2912" class="ax_default line">
          <img id="u2912_img" class="img " src="images/控制直流电机/u2542.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2913" class="ax_default box_1">
          <div id="u2913_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2914" class="ax_default ellipse">
          <img id="u2914_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2914_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2915" class="ax_default ellipse">
          <img id="u2915_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2915_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2916" class="ax_default ellipse">
          <img id="u2916_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2916_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2917" class="ax_default label">
          <div id="u2917_div" class=""></div>
          <div id="u2917_text" class="text ">
            <p><span>12V</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2918" class="ax_default label">
          <div id="u2918_div" class=""></div>
          <div id="u2918_text" class="text ">
            <p><span>GND</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2919" class="ax_default label">
          <div id="u2919_div" class=""></div>
          <div id="u2919_text" class="text ">
            <p><span>5V</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2920" class="ax_default box_1">
          <div id="u2920_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2921" class="ax_default box_1">
          <div id="u2921_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2922" class="ax_default box_1">
          <div id="u2922_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2923" class="ax_default box_1">
          <div id="u2923_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2924" class="ax_default box_1">
          <div id="u2924_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2925" class="ax_default box_1">
          <div id="u2925_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2926" class="ax_default box_1">
          <div id="u2926_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2927" class="ax_default box_1">
          <div id="u2927_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2928" class="ax_default box_1">
          <div id="u2928_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2929" class="ax_default label">
          <div id="u2929_div" class=""></div>
          <div id="u2929_text" class="text ">
            <p><span>IN1</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2930" class="ax_default label">
          <div id="u2930_div" class=""></div>
          <div id="u2930_text" class="text ">
            <p><span>IN2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2931" class="ax_default label">
          <div id="u2931_div" class=""></div>
          <div id="u2931_text" class="text ">
            <p><span>IN3</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2932" class="ax_default label">
          <div id="u2932_div" class=""></div>
          <div id="u2932_text" class="text ">
            <p><span>IN4</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2933" class="ax_default label">
          <div id="u2933_div" class=""></div>
          <div id="u2933_text" class="text ">
            <p><span>ENA</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2934" class="ax_default label">
          <div id="u2934_div" class=""></div>
          <div id="u2934_text" class="text ">
            <p><span>ENB</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2935" class="ax_default box_1">
          <div id="u2935_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2936" class="ax_default ellipse">
          <img id="u2936_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2936_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2937" class="ax_default ellipse">
          <img id="u2937_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2937_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2938" class="ax_default label">
          <div id="u2938_div" class=""></div>
          <div id="u2938_text" class="text ">
            <p><span>OUT1</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2939" class="ax_default label">
          <div id="u2939_div" class=""></div>
          <div id="u2939_text" class="text ">
            <p><span>OUT2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2940" class="ax_default box_1">
          <div id="u2940_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2941" class="ax_default ellipse">
          <img id="u2941_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2941_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2942" class="ax_default ellipse">
          <img id="u2942_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u2942_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2943" class="ax_default label">
          <div id="u2943_div" class=""></div>
          <div id="u2943_text" class="text ">
            <p><span>OUT4</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2944" class="ax_default label">
          <div id="u2944_div" class=""></div>
          <div id="u2944_text" class="text ">
            <p><span>OUT3</span></p>
          </div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2945" class="ax_default line">
          <img id="u2945_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2946" class="ax_default box_1">
          <div id="u2946_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2947" class="ax_default line">
          <img id="u2947_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2948" class="ax_default box_1">
          <div id="u2948_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2949" class="ax_default line">
          <img id="u2949_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2950" class="ax_default box_1">
          <div id="u2950_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2951" class="ax_default line">
          <img id="u2951_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2952" class="ax_default box_1">
          <div id="u2952_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2953" class="ax_default line">
          <img id="u2953_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2954" class="ax_default box_1">
          <div id="u2954_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2955" class="ax_default line">
          <img id="u2955_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2956" class="ax_default box_1">
          <div id="u2956_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2957" class="ax_default ellipse">
          <img id="u2957_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2958" class="ax_default ellipse">
          <img id="u2958_img" class="img " src="images/控制直流电机/u2588.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2959" class="ax_default ellipse">
          <img id="u2959_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2960" class="ax_default ellipse">
          <img id="u2960_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2961" class="ax_default line">
          <img id="u2961_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2962" class="ax_default box_1">
          <div id="u2962_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u2963" class="ax_default line">
          <img id="u2963_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2964" class="ax_default box_1">
          <div id="u2964_div" class=""></div>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2965" class="ax_default label">
        <div id="u2965_div" class=""></div>
        <div id="u2965_text" class="text ">
          <p><span>L298N电机驱动模块</span></p>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u2966" class="ax_default _一级标题">
        <div id="u2966_div" class=""></div>
        <div id="u2966_text" class="text ">
          <p><span>硬件接线：</span></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u2967" class="ax_default" data-left="527" data-top="1050" data-width="110" data-height="281">

        <!-- Unnamed (矩形) -->
        <div id="u2968" class="ax_default box_1">
          <div id="u2968_div" class=""></div>
          <div id="u2968_text" class="text ">
            <p><span>Arduino</span></p><p><span>NANO</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2969" class="ax_default box_1">
          <div id="u2969_div" class=""></div>
          <div id="u2969_text" class="text ">
            <p><span>0</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2970" class="ax_default box_1">
          <div id="u2970_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2971" class="ax_default box_1">
          <div id="u2971_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2972" class="ax_default box_1">
          <div id="u2972_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2973" class="ax_default box_1">
          <div id="u2973_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2974" class="ax_default box_1">
          <div id="u2974_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2975" class="ax_default box_1">
          <div id="u2975_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2976" class="ax_default ellipse">
          <img id="u2976_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2977" class="ax_default box_1">
          <div id="u2977_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2978" class="ax_default label">
          <div id="u2978_div" class=""></div>
          <div id="u2978_text" class="text ">
            <p><span>VIN</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2979" class="ax_default ellipse">
          <img id="u2979_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2980" class="ax_default box_1">
          <div id="u2980_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2981" class="ax_default label">
          <div id="u2981_div" class=""></div>
          <div id="u2981_text" class="text ">
            <p><span>GND</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2982" class="ax_default ellipse">
          <img id="u2982_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2983" class="ax_default box_1">
          <div id="u2983_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2984" class="ax_default label">
          <div id="u2984_div" class=""></div>
          <div id="u2984_text" class="text ">
            <p><span>RST</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2985" class="ax_default ellipse">
          <img id="u2985_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2986" class="ax_default box_1">
          <div id="u2986_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2987" class="ax_default label">
          <div id="u2987_div" class=""></div>
          <div id="u2987_text" class="text ">
            <p><span>5V</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2988" class="ax_default ellipse">
          <img id="u2988_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2989" class="ax_default box_1">
          <div id="u2989_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2990" class="ax_default label">
          <div id="u2990_div" class=""></div>
          <div id="u2990_text" class="text ">
            <p><span>A7</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2991" class="ax_default ellipse">
          <img id="u2991_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2992" class="ax_default box_1">
          <div id="u2992_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2993" class="ax_default label">
          <div id="u2993_div" class=""></div>
          <div id="u2993_text" class="text ">
            <p><span>A6</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2994" class="ax_default ellipse">
          <img id="u2994_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2995" class="ax_default label">
          <div id="u2995_div" class=""></div>
          <div id="u2995_text" class="text ">
            <p><span>A5</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2996" class="ax_default box_1">
          <div id="u2996_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u2997" class="ax_default ellipse">
          <img id="u2997_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2998" class="ax_default box_1">
          <div id="u2998_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u2999" class="ax_default label">
          <div id="u2999_div" class=""></div>
          <div id="u2999_text" class="text ">
            <p><span>A4</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3000" class="ax_default ellipse">
          <img id="u3000_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3001" class="ax_default box_1">
          <div id="u3001_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3002" class="ax_default label">
          <div id="u3002_div" class=""></div>
          <div id="u3002_text" class="text ">
            <p><span>A3</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3003" class="ax_default ellipse">
          <img id="u3003_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3004" class="ax_default box_1">
          <div id="u3004_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3005" class="ax_default label">
          <div id="u3005_div" class=""></div>
          <div id="u3005_text" class="text ">
            <p><span>A2</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3006" class="ax_default ellipse">
          <img id="u3006_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3007" class="ax_default box_1">
          <div id="u3007_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3008" class="ax_default label">
          <div id="u3008_div" class=""></div>
          <div id="u3008_text" class="text ">
            <p><span>A1</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3009" class="ax_default ellipse">
          <img id="u3009_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3010" class="ax_default box_1">
          <div id="u3010_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3011" class="ax_default label">
          <div id="u3011_div" class=""></div>
          <div id="u3011_text" class="text ">
            <p><span>A0</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3012" class="ax_default ellipse">
          <img id="u3012_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3013" class="ax_default box_1">
          <div id="u3013_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3014" class="ax_default label">
          <div id="u3014_div" class=""></div>
          <div id="u3014_text" class="text ">
            <p><span>REF</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3015" class="ax_default ellipse">
          <img id="u3015_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3016" class="ax_default box_1">
          <div id="u3016_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3017" class="ax_default label">
          <div id="u3017_div" class=""></div>
          <div id="u3017_text" class="text ">
            <p><span>3V3</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3018" class="ax_default ellipse">
          <img id="u3018_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3019" class="ax_default box_1">
          <div id="u3019_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3020" class="ax_default label">
          <div id="u3020_div" class=""></div>
          <div id="u3020_text" class="text ">
            <p><span>D13</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3021" class="ax_default ellipse">
          <img id="u3021_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3022" class="ax_default box_1">
          <div id="u3022_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3023" class="ax_default ellipse">
          <img id="u3023_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3024" class="ax_default box_1">
          <div id="u3024_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3025" class="ax_default ellipse">
          <img id="u3025_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3026" class="ax_default box_1">
          <div id="u3026_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3027" class="ax_default ellipse">
          <img id="u3027_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3028" class="ax_default box_1">
          <div id="u3028_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3029" class="ax_default ellipse">
          <img id="u3029_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3030" class="ax_default box_1">
          <div id="u3030_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3031" class="ax_default ellipse">
          <img id="u3031_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3032" class="ax_default box_1">
          <div id="u3032_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3033" class="ax_default ellipse">
          <img id="u3033_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3034" class="ax_default box_1">
          <div id="u3034_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3035" class="ax_default ellipse">
          <img id="u3035_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3036" class="ax_default box_1">
          <div id="u3036_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3037" class="ax_default ellipse">
          <img id="u3037_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3038" class="ax_default box_1">
          <div id="u3038_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3039" class="ax_default ellipse">
          <img id="u3039_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3040" class="ax_default box_1">
          <div id="u3040_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3041" class="ax_default ellipse">
          <img id="u3041_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3042" class="ax_default box_1">
          <div id="u3042_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3043" class="ax_default ellipse">
          <img id="u3043_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3044" class="ax_default box_1">
          <div id="u3044_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3045" class="ax_default ellipse">
          <img id="u3045_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3046" class="ax_default box_1">
          <div id="u3046_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3047" class="ax_default ellipse">
          <img id="u3047_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3048" class="ax_default box_1">
          <div id="u3048_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3049" class="ax_default ellipse">
          <img id="u3049_img" class="img " src="images/四角开关/u87.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3050" class="ax_default box_1">
          <div id="u3050_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3051" class="ax_default label">
          <div id="u3051_div" class=""></div>
          <div id="u3051_text" class="text ">
            <p><span>TX</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3052" class="ax_default label">
          <div id="u3052_div" class=""></div>
          <div id="u3052_text" class="text ">
            <p><span>RX</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3053" class="ax_default label">
          <div id="u3053_div" class=""></div>
          <div id="u3053_text" class="text ">
            <p><span>RST</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3054" class="ax_default label">
          <div id="u3054_div" class=""></div>
          <div id="u3054_text" class="text ">
            <p><span>GND</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3055" class="ax_default label">
          <div id="u3055_div" class=""></div>
          <div id="u3055_text" class="text ">
            <p><span>D2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3056" class="ax_default label">
          <div id="u3056_div" class=""></div>
          <div id="u3056_text" class="text ">
            <p><span>D3</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3057" class="ax_default label">
          <div id="u3057_div" class=""></div>
          <div id="u3057_text" class="text ">
            <p><span>D4</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3058" class="ax_default label">
          <div id="u3058_div" class=""></div>
          <div id="u3058_text" class="text ">
            <p><span>D5</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3059" class="ax_default label">
          <div id="u3059_div" class=""></div>
          <div id="u3059_text" class="text ">
            <p><span>D6</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3060" class="ax_default label">
          <div id="u3060_div" class=""></div>
          <div id="u3060_text" class="text ">
            <p><span>D7</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3061" class="ax_default label">
          <div id="u3061_div" class=""></div>
          <div id="u3061_text" class="text ">
            <p><span>D8</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3062" class="ax_default label">
          <div id="u3062_div" class=""></div>
          <div id="u3062_text" class="text ">
            <p><span>D9</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3063" class="ax_default label">
          <div id="u3063_div" class=""></div>
          <div id="u3063_text" class="text ">
            <p><span>D10</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3064" class="ax_default label">
          <div id="u3064_div" class=""></div>
          <div id="u3064_text" class="text ">
            <p><span>D11</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3065" class="ax_default label">
          <div id="u3065_div" class=""></div>
          <div id="u3065_text" class="text ">
            <p><span>D12</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3066" class="ax_default box_1">
          <div id="u3066_div" class=""></div>
          <div id="u3066_text" class="text ">
            <p><span>USB</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3067" class="ax_default box_1">
          <div id="u3067_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3068" class="ax_default box_1">
          <div id="u3068_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3069" class="ax_default box_1">
          <div id="u3069_div" class=""></div>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u3070" class="ax_default" data-left="50" data-top="1050" data-width="225" data-height="89">

        <!-- Unnamed (水平线) -->
        <div id="u3071" class="ax_default line">
          <img id="u3071_img" class="img " src="images/控制直流电机/u2597.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3072" class="ax_default line">
          <img id="u3072_img" class="img " src="images/控制直流电机/u2598.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3073" class="ax_default label">
          <div id="u3073_div" class=""></div>
          <div id="u3073_text" class="text ">
            <p><span>-</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3074" class="ax_default label">
          <div id="u3074_div" class=""></div>
          <div id="u3074_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3075" class="ax_default box_1">
          <div id="u3075_div" class=""></div>
          <div id="u3075_text" class="text ">
            <p><span>电池</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3076" class="ax_default box_1">
          <div id="u3076_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3077" class="ax_default box_1">
          <div id="u3077_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3078" class="ax_default box_1">
          <div id="u3078_div" class=""></div>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u3079" class="ax_default" data-left="527" data-top="755" data-width="97" data-height="120">

        <!-- Unnamed (矩形) -->
        <div id="u3080" class="ax_default box_1">
          <div id="u3080_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3081" class="ax_default box_1">
          <div id="u3081_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3082" class="ax_default ellipse">
          <img id="u3082_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3083" class="ax_default ellipse">
          <img id="u3083_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3084" class="ax_default ellipse">
          <img id="u3084_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3085" class="ax_default ellipse">
          <img id="u3085_img" class="img " src="images/控制四相步进电机/u2854.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3086" class="ax_default label">
          <div id="u3086_div" class=""></div>
          <div id="u3086_text" class="text ">
            <p><span>A+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3087" class="ax_default label">
          <div id="u3087_div" class=""></div>
          <div id="u3087_text" class="text ">
            <p><span>B+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3088" class="ax_default label">
          <div id="u3088_div" class=""></div>
          <div id="u3088_text" class="text ">
            <p><span>B-</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3089" class="ax_default label">
          <div id="u3089_div" class=""></div>
          <div id="u3089_text" class="text ">
            <p><span>A-</span></p>
          </div>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3090" class="ax_default line">
          <img id="u3090_img" class="img " src="images/控制四相步进电机/u2862.png"/>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u3091" class="ax_default" data-left="766" data-top="1249" data-width="119" data-height="65">

        <!-- Unnamed (矩形) -->
        <div id="u3092" class="ax_default box_1">
          <div id="u3092_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3093" class="ax_default line">
          <img id="u3093_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3094" class="ax_default line">
          <img id="u3094_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3095" class="ax_default line">
          <img id="u3095_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3096" class="ax_default line">
          <img id="u3096_img" class="img " src="images/四角开关/u53.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3097" class="ax_default label">
          <div id="u3097_div" class=""></div>
          <div id="u3097_text" class="text ">
            <p><span>0</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3098" class="ax_default label">
          <div id="u3098_div" class=""></div>
          <div id="u3098_text" class="text ">
            <p><span>1</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3099" class="ax_default label">
          <div id="u3099_div" class=""></div>
          <div id="u3099_text" class="text ">
            <p><span>2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3100" class="ax_default label">
          <div id="u3100_div" class=""></div>
          <div id="u3100_text" class="text ">
            <p><span>3</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3101" class="ax_default ellipse">
          <img id="u3101_img" class="img " src="images/四角开关/u61.png"/>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u3102" class="ax_default" data-left="674" data-top="1082" data-width="40" data-height="16">

        <!-- Unnamed (矩形) -->
        <div id="u3103" class="ax_default box_1">
          <div id="u3103_div" class=""></div>
          <div id="u3103_text" class="text ">
            <p><span>10KΩ</span></p>
          </div>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3104" class="ax_default _连接线">
        <img id="u3104_seg0" class="img " src="images/四角开关/u182_seg0.png" alt="u3104_seg0"/>
        <img id="u3104_seg1" class="img " src="images/控制四相步进电机/u3104_seg1.png" alt="u3104_seg1"/>
        <div id="u3104_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3105" class="ax_default _连接线">
        <img id="u3105_seg0" class="img " src="images/控制四相步进电机/u3105_seg0.png" alt="u3105_seg0"/>
        <img id="u3105_seg1" class="img " src="images/控制四相步进电机/u3105_seg1.png" alt="u3105_seg1"/>
        <img id="u3105_seg2" class="img " src="images/控制四相步进电机/u3105_seg2.png" alt="u3105_seg2"/>
        <div id="u3105_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3106" class="ax_default _连接线">
        <img id="u3106_seg0" class="img " src="images/控制四相步进电机/u3106_seg0.png" alt="u3106_seg0"/>
        <div id="u3106_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3107" class="ax_default _连接线">
        <img id="u3107_seg0" class="img " src="images/控制四相步进电机/u3107_seg0.png" alt="u3107_seg0"/>
        <img id="u3107_seg1" class="img " src="images/控制四相步进电机/u3107_seg1.png" alt="u3107_seg1"/>
        <img id="u3107_seg2" class="img " src="images/控制四相步进电机/u3107_seg2.png" alt="u3107_seg2"/>
        <img id="u3107_seg3" class="img " src="images/控制四相步进电机/u3107_seg3.png" alt="u3107_seg3"/>
        <img id="u3107_seg4" class="img " src="images/控制四相步进电机/u3107_seg4.png" alt="u3107_seg4"/>
        <img id="u3107_seg5" class="img " src="images/控制四相步进电机/u3107_seg5.png" alt="u3107_seg5"/>
        <div id="u3107_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (组 合) -->
      <div id="u3108" class="ax_default" data-left="265" data-top="778" data-width="180" data-height="180">

        <!-- Unnamed (矩形) -->
        <div id="u3109" class="ax_default box_1">
          <div id="u3109_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3110" class="ax_default box_1">
          <div id="u3110_div" class=""></div>
          <div id="u3110_text" class="text ">
            <p><span>L298N</span></p>
          </div>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3111" class="ax_default line">
          <img id="u3111_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3112" class="ax_default line">
          <img id="u3112_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3113" class="ax_default line">
          <img id="u3113_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3114" class="ax_default line">
          <img id="u3114_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3115" class="ax_default line">
          <img id="u3115_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3116" class="ax_default line">
          <img id="u3116_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3117" class="ax_default line">
          <img id="u3117_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3118" class="ax_default line">
          <img id="u3118_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3119" class="ax_default line">
          <img id="u3119_img" class="img " src="images/控制直流电机/u2518.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3120" class="ax_default line">
          <img id="u3120_img" class="img " src="images/控制直流电机/u2527.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3121" class="ax_default line">
          <img id="u3121_img" class="img " src="images/控制直流电机/u2527.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3122" class="ax_default line">
          <img id="u3122_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3123" class="ax_default line">
          <img id="u3123_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3124" class="ax_default line">
          <img id="u3124_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3125" class="ax_default line">
          <img id="u3125_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3126" class="ax_default line">
          <img id="u3126_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3127" class="ax_default line">
          <img id="u3127_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (垂直线) -->
        <div id="u3128" class="ax_default line">
          <img id="u3128_img" class="img " src="images/控制直流电机/u2529.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3129" class="ax_default box_1">
          <div id="u3129_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3130" class="ax_default line">
          <img id="u3130_img" class="img " src="images/控制直流电机/u2537.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3131" class="ax_default line">
          <img id="u3131_img" class="img " src="images/控制直流电机/u2537.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3132" class="ax_default line">
          <img id="u3132_img" class="img " src="images/控制直流电机/u2539.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3133" class="ax_default ellipse">
          <img id="u3133_img" class="img " src="images/控制直流电机/u2540.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3134" class="ax_default ellipse">
          <img id="u3134_img" class="img " src="images/控制直流电机/u2540.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3135" class="ax_default line">
          <img id="u3135_img" class="img " src="images/控制直流电机/u2542.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3136" class="ax_default box_1">
          <div id="u3136_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3137" class="ax_default ellipse">
          <img id="u3137_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3137_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3138" class="ax_default ellipse">
          <img id="u3138_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3138_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3139" class="ax_default ellipse">
          <img id="u3139_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3139_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3140" class="ax_default label">
          <div id="u3140_div" class=""></div>
          <div id="u3140_text" class="text ">
            <p><span>12V</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3141" class="ax_default label">
          <div id="u3141_div" class=""></div>
          <div id="u3141_text" class="text ">
            <p><span>GND</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3142" class="ax_default label">
          <div id="u3142_div" class=""></div>
          <div id="u3142_text" class="text ">
            <p><span>5V</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3143" class="ax_default box_1">
          <div id="u3143_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3144" class="ax_default box_1">
          <div id="u3144_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3145" class="ax_default box_1">
          <div id="u3145_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3146" class="ax_default box_1">
          <div id="u3146_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3147" class="ax_default box_1">
          <div id="u3147_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3148" class="ax_default box_1">
          <div id="u3148_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3149" class="ax_default box_1">
          <div id="u3149_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3150" class="ax_default box_1">
          <div id="u3150_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3151" class="ax_default box_1">
          <div id="u3151_div" class=""></div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3152" class="ax_default label">
          <div id="u3152_div" class=""></div>
          <div id="u3152_text" class="text ">
            <p><span>IN1</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3153" class="ax_default label">
          <div id="u3153_div" class=""></div>
          <div id="u3153_text" class="text ">
            <p><span>IN2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3154" class="ax_default label">
          <div id="u3154_div" class=""></div>
          <div id="u3154_text" class="text ">
            <p><span>IN3</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3155" class="ax_default label">
          <div id="u3155_div" class=""></div>
          <div id="u3155_text" class="text ">
            <p><span>IN4</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3156" class="ax_default label">
          <div id="u3156_div" class=""></div>
          <div id="u3156_text" class="text ">
            <p><span>ENA</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3157" class="ax_default label">
          <div id="u3157_div" class=""></div>
          <div id="u3157_text" class="text ">
            <p><span>ENB</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3158" class="ax_default box_1">
          <div id="u3158_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3159" class="ax_default ellipse">
          <img id="u3159_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3159_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3160" class="ax_default ellipse">
          <img id="u3160_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3160_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3161" class="ax_default label">
          <div id="u3161_div" class=""></div>
          <div id="u3161_text" class="text ">
            <p><span>OUT1</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3162" class="ax_default label">
          <div id="u3162_div" class=""></div>
          <div id="u3162_text" class="text ">
            <p><span>OUT2</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3163" class="ax_default box_1">
          <div id="u3163_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3164" class="ax_default ellipse">
          <img id="u3164_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3164_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3165" class="ax_default ellipse">
          <img id="u3165_img" class="img " src="images/控制直流电机/u2544.png"/>
          <div id="u3165_text" class="text ">
            <p><span>+</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3166" class="ax_default label">
          <div id="u3166_div" class=""></div>
          <div id="u3166_text" class="text ">
            <p><span>OUT4</span></p>
          </div>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3167" class="ax_default label">
          <div id="u3167_div" class=""></div>
          <div id="u3167_text" class="text ">
            <p><span>OUT3</span></p>
          </div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3168" class="ax_default line">
          <img id="u3168_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3169" class="ax_default box_1">
          <div id="u3169_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3170" class="ax_default line">
          <img id="u3170_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3171" class="ax_default box_1">
          <div id="u3171_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3172" class="ax_default line">
          <img id="u3172_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3173" class="ax_default box_1">
          <div id="u3173_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3174" class="ax_default line">
          <img id="u3174_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3175" class="ax_default box_1">
          <div id="u3175_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3176" class="ax_default line">
          <img id="u3176_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3177" class="ax_default box_1">
          <div id="u3177_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3178" class="ax_default line">
          <img id="u3178_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3179" class="ax_default box_1">
          <div id="u3179_div" class=""></div>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3180" class="ax_default ellipse">
          <img id="u3180_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3181" class="ax_default ellipse">
          <img id="u3181_img" class="img " src="images/控制直流电机/u2588.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3182" class="ax_default ellipse">
          <img id="u3182_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (椭圆形) -->
        <div id="u3183" class="ax_default ellipse">
          <img id="u3183_img" class="img " src="images/控制直流电机/u2587.png"/>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3184" class="ax_default line">
          <img id="u3184_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3185" class="ax_default box_1">
          <div id="u3185_div" class=""></div>
        </div>

        <!-- Unnamed (水平线) -->
        <div id="u3186" class="ax_default line">
          <img id="u3186_img" class="img " src="images/控制直流电机/u2575.png"/>
        </div>

        <!-- Unnamed (矩形) -->
        <div id="u3187" class="ax_default box_1">
          <div id="u3187_div" class=""></div>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3188" class="ax_default _连接线">
        <img id="u3188_seg0" class="img " src="images/控制四相步进电机/u3188_seg0.png" alt="u3188_seg0"/>
        <img id="u3188_seg1" class="img " src="images/控制四相步进电机/u3188_seg1.png" alt="u3188_seg1"/>
        <div id="u3188_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3189" class="ax_default _连接线">
        <img id="u3189_seg0" class="img " src="images/控制四相步进电机/u3189_seg0.png" alt="u3189_seg0"/>
        <img id="u3189_seg1" class="img " src="images/控制四相步进电机/u3189_seg1.png" alt="u3189_seg1"/>
        <div id="u3189_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3190" class="ax_default _连接线">
        <img id="u3190_seg0" class="img " src="images/控制四相步进电机/u3190_seg0.png" alt="u3190_seg0"/>
        <img id="u3190_seg1" class="img " src="images/控制四相步进电机/u3190_seg1.png" alt="u3190_seg1"/>
        <div id="u3190_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3191" class="ax_default _连接线">
        <img id="u3191_seg0" class="img " src="images/控制四相步进电机/u3191_seg0.png" alt="u3191_seg0"/>
        <img id="u3191_seg1" class="img " src="images/控制四相步进电机/u3191_seg1.png" alt="u3191_seg1"/>
        <div id="u3191_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3192" class="ax_default _连接线">
        <img id="u3192_seg0" class="img " src="images/控制直流电机/u2844_seg0.png" alt="u3192_seg0"/>
        <img id="u3192_seg1" class="img " src="images/控制四相步进电机/u3192_seg1.png" alt="u3192_seg1"/>
        <img id="u3192_seg2" class="img " src="images/控制四相步进电机/u3192_seg2.png" alt="u3192_seg2"/>
        <div id="u3192_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3193" class="ax_default _连接线">
        <img id="u3193_seg0" class="img " src="images/控制四相步进电机/u3193_seg0.png" alt="u3193_seg0"/>
        <img id="u3193_seg1" class="img " src="images/控制四相步进电机/u3193_seg1.png" alt="u3193_seg1"/>
        <img id="u3193_seg2" class="img " src="images/控制四相步进电机/u3193_seg2.png" alt="u3193_seg2"/>
        <div id="u3193_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3194" class="ax_default _连接线">
        <img id="u3194_seg0" class="img " src="images/控制四相步进电机/u3194_seg0.png" alt="u3194_seg0"/>
        <img id="u3194_seg1" class="img " src="images/语音识别模块声控/u1938_seg4.png" alt="u3194_seg1"/>
        <img id="u3194_seg2" class="img " src="images/控制四相步进电机/u3194_seg2.png" alt="u3194_seg2"/>
        <img id="u3194_seg3" class="img " src="images/控制四相步进电机/u3194_seg3.png" alt="u3194_seg3"/>
        <div id="u3194_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3195" class="ax_default _连接线">
        <img id="u3195_seg0" class="img " src="images/控制四相步进电机/u3195_seg0.png" alt="u3195_seg0"/>
        <img id="u3195_seg1" class="img " src="images/控制四相步进电机/u3195_seg1.png" alt="u3195_seg1"/>
        <img id="u3195_seg2" class="img " src="images/控制四相步进电机/u3195_seg2.png" alt="u3195_seg2"/>
        <img id="u3195_seg3" class="img " src="images/控制四相步进电机/u3195_seg3.png" alt="u3195_seg3"/>
        <div id="u3195_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3196" class="ax_default _连接线">
        <img id="u3196_seg0" class="img " src="images/控制四相步进电机/u3196_seg0.png" alt="u3196_seg0"/>
        <img id="u3196_seg1" class="img " src="images/控制四相步进电机/u3196_seg1.png" alt="u3196_seg1"/>
        <div id="u3196_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (连接线) -->
      <div id="u3197" class="ax_default _连接线">
        <img id="u3197_seg0" class="img " src="images/控制四相步进电机/u3197_seg0.png" alt="u3197_seg0"/>
        <img id="u3197_seg1" class="img " src="images/控制四相步进电机/u3197_seg1.png" alt="u3197_seg1"/>
        <img id="u3197_seg2" class="img " src="images/控制四相步进电机/u3197_seg2.png" alt="u3197_seg2"/>
        <div id="u3197_text" class="text " style="display:none; visibility: hidden">
          <p></p>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u3198" class="ax_default _一级标题">
        <div id="u3198_div" class=""></div>
        <div id="u3198_text" class="text ">
          <p><span>示例代码：</span></p>
        </div>
      </div>

      <!-- Unnamed (矩形) -->
      <div id="u3199" class="ax_default _文本段落">
        <div id="u3199_div" class=""></div>
        <div id="u3199_text" class="text ">
          <p><span>#define IN1 5 </span></p><p><span>#define IN2 4</span></p><p><span>#define IN3 3</span></p><p><span>#define IN4 2</span></p><p><span>#define BTN 6 </span></p><p><span><br></span></p><p><span>int _step =0;</span></p><p><span>int dir = 0;</span></p><p><span>int buttonState = 0;</span></p><p><span>int motor_speed = 5;</span></p><p><span>bool ispressed = false;</span></p><p><span><br></span></p><p><span>void setup() {</span></p><p><span>//初始化各IO,模式为OUTPUT 输出模式</span></p><p><span>pinMode(IN1,OUTPUT);</span></p><p><span>pinMode(IN2,OUTPUT);</span></p><p><span>pinMode(IN3,OUTPUT);</span></p><p><span>pinMode(IN4,OUTPUT);</span></p><p><span>pinMode(BTN,INPUT);</span></p><p><span>}</span></p><p><span>&nbsp;</span></p><p><span>void loop() {</span></p><p><span>&nbsp; buttonState = digitalRead(BTN);</span></p><p><span>&nbsp; if (buttonState == HIGH)</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp; &nbsp; ispressed = true;</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp; if(buttonState == LOW &amp;&amp; ispressed == true)</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp; &nbsp; ispressed = false;</span></p><p><span>&nbsp;&nbsp; &nbsp; change_dir();</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp; if(dir == 0)</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp;&nbsp; up();</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp; if(dir == 1)</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp;&nbsp; down(); </span></p><p><span>&nbsp; }</span></p><p><span>}</span></p><p><span><br></span></p><p><span>void change_dir()</span></p><p><span>{</span></p><p><span>&nbsp; if(dir == 0)</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp;&nbsp; dir = 1;</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp; else</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp;&nbsp; dir = 0;</span></p><p><span>&nbsp; }&nbsp; </span></p><p><span>}</span></p><p><span><br></span></p><p><span>void down()</span></p><p><span>&nbsp; {</span></p><p><span>&nbsp;&nbsp;&nbsp; switch(_step){</span></p><p><span>&nbsp;&nbsp;&nbsp; case 0:</span></p><p><span>&nbsp;&nbsp;&nbsp; //stepperSpeed++;</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 1:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 2:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 3:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 4:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 5:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; case 6:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 7:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; default:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp;&nbsp; _step++;</span></p><p><span>&nbsp;</span></p><p><span>&nbsp; if(_step&gt;7)</span></p><p><span>&nbsp; {&nbsp; &nbsp; </span></p><p><span>&nbsp;&nbsp;&nbsp; _step=0;&nbsp; </span></p><p><span>&nbsp; }</span></p><p><span><br></span></p><p><span>&nbsp; delay(motor_speed);</span></p><p><span>&nbsp; } </span></p><p><span><br></span></p><p><span>&nbsp; void up()</span></p><p><span>{&nbsp;&nbsp; </span></p><p><span>&nbsp; switch(_step){</span></p><p><span>&nbsp;&nbsp;&nbsp; case 0:</span></p><p><span>&nbsp;&nbsp;&nbsp; //stepperSpeed++;</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 1:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 2:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 3:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 4:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 5:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; case 6:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; case 7:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, HIGH);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, HIGH);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp;&nbsp;&nbsp; default:</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN1, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN2, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN3, LOW);</span></p><p><span>&nbsp;&nbsp; &nbsp;&nbsp; digitalWrite(IN4, LOW);</span></p><p><span>&nbsp;&nbsp;&nbsp; break;</span></p><p><span>&nbsp; }</span></p><p><span>&nbsp;&nbsp;&nbsp; _step++;</span></p><p><span>&nbsp;</span></p><p><span>&nbsp; if(_step&gt;7)</span></p><p><span>&nbsp; {&nbsp; &nbsp; </span></p><p><span>&nbsp;&nbsp;&nbsp; _step=0;&nbsp; </span></p><p><span>&nbsp; }</span></p><p><span>&nbsp;</span></p><p><span>&nbsp; delay(motor_speed);</span></p><p><span>}</span></p>
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          <p><span>运行结果：</span></p>
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          <p><span>按下按钮时电机正转，再按下按钮时电机反转。每按一次按钮电机转动方向变换一次。</span></p>
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